Benjamin r



@uiten tstee letent @ffice IMPROVEMENT IN ROLLS FOR AYARN-DRESSINGr MACHINES. l

wie rlgelmle tefeiret it in tlgese ettens ettent zint melting peut .et tige seme.

TO ALL WHOM IT MAY CON CERN:

Be it known that I, BENJAMIN R. COTTEN, of Lewiston, in the county of Androscog'frin, and State of Maine,

D have invented an Improvement in Dresser-Rolls; and I do hereby declare/that the following, taken in connection with the drawings which accompany and form part of this specification, is a. description of my invention suiicient to enable those skilled in the art to practise it, d

The invention relates to the construction of yarn-dresser rolls, with reference to giving them surfaces which shall not only weer evenly and be enduring, but which shell save :i large per cent. of the cost ette'ndinfcr 'the employment of such rolls as have been heretoforey used with the best results.

Common dresser-rolls, whether mede of wood, soaps'tone, or copper, are subject to various objections. The wooden ones, by constant running in the size, become. soft, and from being often Wet rind then dried, soon warp. Soapstone has, es is Well known, some parts softer and of more open grain than others, and the action of the size or starch is such that the stone roll becomes pitted, and performs its work imperfeetly, so that it has to be turned down frequently., Iron rolls are not used on account of the corrosive nature of the metal when' in contact with the moist size, Copper has b est answered the purpose for dresser-rolls. Theseare, however, expensive, costing from fifty to seventy-five dollars per roll, and their surfaces ure easily affected by the acid in the size, in such a. manner and to such degree that the yarn, in passing around, makes creases and grooves in the roll. In consequence of this, the size is not laid on evenly, :1nd the frequent turnings of of the rolls soon destroys them, thus rendering their use very expensive. To obviate all these difficulties, Icover the surface of old rolls, or copper, iron, or other metallic rolls, with tin and lead, or with common solder. This surface is found to answer all the requirements of a. good and desirzible roll. It is acted upon neither by the acid in the starch, nor is it made soft so as to be grooved on its surface by the running:r of the thread over it. It will be lobvious that much expense can be saved to manufacturing companies by coating old copper rolls in the manner` described, or iron, or other metallic ones; and 'by using iron rolls covered with the tin and lead,'certainly seventy-five per cent. may be saved over the rst cost of copper ones. The tin and lend alloy is to be soldered directly to the surface of the copper or other roll, or .deposited thereupon by :i battery, and though I prefer 'such en alloy or metal composition, it will be obvious that some other similar soft metal covering, which can be melted or deposited upon or soldered to the surface of a copper, iron, or other metal roll, and which will .not be injuriously alfeeted hy the dressing Huid, may be employed.

The drawing represents :t cross-section of a roll made in accordance with my invention.

a denotes the centre part, which may be iron vor copper', or iron covered with copper b. e denotes the dresser-surface metal, melted or deposited uniformly over the cylindrical surface of the iron or copper roll:

I claim a dresser-roll having u metal-coated surface, substantially :is set forth.

BENJ. R. COTTEN.

Witnesses:

T. A. D. JEssENEN, JOHN B. COHEN. 

